multidisciplinary treatment (MDT) is the mainstay for tumor diagnosis and treatment. The problem-based learning(PBL) is an emerging important teaching method. The PBL teaching practice of breast cancer imaging based on MDT concept was carried out in the class of 2014 clinical medicine students. The formative assement method was used to evaluate the teaching effect and some problems was considerated. Firstly

there was of no significant among each tutor team’s quantitative evaluation for students （F=1.014

P=0.388).Secondly

tutors received high praise with the positive evaluation rate was of 96.28% from the students

significant difference were found among parts of the tutors（χ2=10.554，P=0.032）. Lastly

the positive and negative evaluation rate of student's self-assessment was 87.33% and 12.67% respectively.The teaching effect of PBL based on MDT in breast cancer imaging teaching practice is encouraging

the formative assessment method can objectively and effectively evaluate the effect of this kind learning method

but evaluation standards need to be further perfected and improved

some problems were found and must be taken seriously in this teaching pratice.